Safety-razor-blade stropper



June 16, 1925.

G. D. GALLAGHER SAFETY RAZOR BLADE STROPPER 2 Sheets-Sheet 1 Filed Sept. 22, 1921 gwoemf z June 16,- 1925. 1,542,382

acme June 16, 1925.

f UNITED STATES PATENT OFFICE.

GEORGE D. GALLAGHER, WASHINGTON, DISTRICT OF COLUMBIA, AS BIGNOR, BY

IESNE ASSIGNMENTS, OF

TWENTY-FIVE ONE HUNDRED AND FOURTHS TO NANNIE T. EOOB, TWENTY-FIVE ONE HUNDRED AND FOURTHS' TO RUTH B. WALTEN, FOUR ONE HUNDRED AND FOURTHS TO LIARGUERITE G. SCHANBERGER, ALL OF BALTIMORE, MARYLAND, TWENTY-FIVE ONE HUNDRED AND FOURTHS T0 CALLIE I. .KOOR'E, OI WASHINGTON, DISTRICT OF COLUMBIA, AND TWENTY-FIVE ONE HUNDRED AND FOURTHS TO J. MARSH IILATTHEWS, OF BALTIMORE COUNTY,

mum.

SAFETY-RAZOR-BLADE STROPPER. J I

To all whom it may conccm:

Be it known that I Gnonon D. GALLAGHER, a citizenof the Umted States, residing at Washington, District of Columbia, have invented certain new and useful Improvements in Safety-Razor-Blade Stroppers, of which the followin' is a description, reference being had to t e accompanying drawing and fully disclosed.

to the figures of reference marked thereon. 1

This inventidn relates to razor blades. stropping devices, and more particularly to improvements in the type of devices set forth in my prior Patent No. 1,319,149, granted October 21, 1919.

One of the main objects of the present invention is to provide a hand operated stropper of the before-mentioned type in which the tubular sleeves supporting the stropping rolls and through which the spiral driver reci rocates, terminate at or within the ends 0 the enclosing casing so thaton operation of the driver they will not project as in the rior mentioned device.

A further 0 ject ,of this invention resides in providing such a stropper composed of a minimum number of parts which can be cheaply made and easily, assembled.

Another object of this invention resides in providing a novel blade holder for holding the blade so that it will not fall off the blade holder when the latter is pulled out of the casing.

These and other objects will in part be obvious and'will in part be hereinafter more Referring now to the accompanying drawings Figure 1 is a plan view partly in section of one form of my improved stropper;

Fig. 2 is an end view thereof; I

Fig. 3 is a section on .line 33 of Fig. 1;

Fig. 4 is a detail perspective view of one of the slotted roll supporting tubes;

Fig. 5 is a plan view of the blade holder with the blade in held position;

Fig. 6 is a side view thereof showing the outline before taking its disclosed as embodying an enclosing casing 1 suitabl perforated at its ends to rotatably receive t e tubes or sleeves 2 and 3. The ends of these tubes or sleeves may be turned outwardly as at 4 and 5, or may be suitably shouldered to prevent endwise movement with respect to the casing. Adjacent one end the tubes or sleeves are formed with slots 6 which are three or four in number arranged symmetrically around the circumference of the tube. Surrounding and journaled u on these tubes or sleeves 2 and 3 are the ro or holding tubes 7 and 8 which are of suflicient larger diameter to fit snugly upon the tubes 2 and 3, yet permit endwise movement of the tubes 7 and 8 along the tubes 2 and 3. Preferably adjacent one end the tubes 7 and 8 are formed with an annular race-wa 9 formed in any desired manner, whic race-way is indented at spaced intervals as at 10, 11, 12 and 13, thereby forming individual pockets or cages for the balls 14, 15, 16 and 17. These balls pass partly through the slot 6 of the tubes or sleeves 2 and 3 and make driving engagement or contact with a spiral driver. This driver comprises the two spiral rods 18 and 19 of desired pitch, united by the yoke or handle 20 as by the turned down ends 21 and 22 of the rods; the other ends of the spiral rods 18 and 19 are provided with turned down ends 23 over which fit .the washers 24 which are preferably of a larger diameter than the diameter of the spiral ortion of the rods. The ends of the turned own portions 23 are peened over to fasten the washers in place. By means of this .constrziiction, the washers when in extremtee inwar 'tion i. e. in a 'tion o si to that s iz wn iii Fig. 1, are bf'bught g a inst the balls and thus limit further outward movement of the s iral rods. This construction prevents e blade from contactin too forcibly against the rolls.

e rolls 24, and 25 which are of wood or other suitable material, are cored out to receive the roll supporting tubes 7 and 8 and are rigidly fastened thereto as by wedging, ke ing or gluing. The surfaces of these rofis are suitab y faced with leather 26, and 27.

The rolls are mounted in'the basket 28 (see Fig. 7}} which as shown comprises a referably s set metal stamping inc udl a use portion 29 cut away as at 30 for lig tness, and'the end portions 31 and 32 bent at right angles. These end portions are provided with bores 33, 34, 35 and 36 to receive the tubes 7 and 8, the ends of said tubes being preferabl turned outwardly as at 37 to prevent disp acement. The end rtion 31 1s provided with a slot 38 preferab narrow, although not necessarily, while t e opposite end portion 32 is formed with a bore 39, which rotatably receives one end of the blade shifting member which in the present form comprises a slotted tube or sleeve 40 to the other end of which is afiixed a spiral 41 preferably of different and certainly sufficient pitch to uickly flop the blade holder as'hereinafter described. This spiral portion 41 passes through the slot 38 or angular a erture and thence has its end journaled in t e end of the casing as at 42. As illustrated clearly in Fig. 3, the .blade shifting member 40 is diametrically slotted along its length to permit the blade 43 to project therethrough into contact with the stropping rolls. The blade carrier 44 in one form is shown as a rod knurled at its outer end at 45 to provide a gri ping handle. Its inner end is provided with any suitable fastening means 46 en aging the slots of the tube 40 to prevent tfie com lete withdrawal of the blade carrier 44. he blade carrier 44 and the slotted sleeve 40 constitute the blade holder.

In the preferred form, the blade carrier 44 is cut away as at 47, leaving two upstanding studs or cars 48 and 49 adapted to ass through the holes 50 and 51 of the Gi ette blade. The opposite end faces of the cut away portion 47 are beveled or inclined outwardly and downwardly as at 52 and 53 whereby to form a locking means to prevent inadvertent removal of the blade. In order to insert the blade, it is bowed outwardly as in dotted lines of Fig. 6, and is then permitted to s ring back to normal straight position and thus locked beneath the beveled end faces of the cut away portion. The end portion 32 is cut away as at 54 and 55 to permit the 2 and- 3, but also forms a means 000 human ferring again to the basket 29, it will be seen that it not only constitutes a rigid support for the rolls on the tubes or sleeves rating with the spiral 41 for positioning e blade 43 with respect to the rolls.

In operation, when the spiral driver 18 19 is pulled outwardly, the first portion of the movement causes the balls 14 to 17 inclusive, to travel endwise of the slots 6 carrying the tubes 7 and 8, the rolls and basket 29 endwise of the casing. Since the blade holdin tube 40and its spiral portion 41 are he (1 in the casing from endwise movement, the'slot 38 in t e basket travels along the. spiral 41 to rotate the s iral and this oscillates the blade holding tu 40. This is the blade positioning movement. The blade is now positioned against the rolls. On further outward movement of the spirals 18 and 19, the balls are brought a ainst the ends of the slots 6, at which time t e spirals tend to turn the balls, which movement rotates the tubes or sleeves 2;and 3, and b means of the pockets in the 'o uter tubes 7 and 8 rotates the rolls 24 and 25.

As the ends of the spirals 18 and 19 reach their extreme outer position, the caps or steps 24 abut the balls and prevent further outward movement. When the spirals are reversed or pushed inwardl again, the initial movement permits the halls-to move in the op osite direction along the slots 6 to reverse y position the blade as before, and further movement of the spirals then rotates the rolls to produce the desired stropping action.

In the modification set forth in Fig. 8 the casin is provided with the pairs 0 inward y projecting tubes or sleeves 61 to 64, inclusive, which slidin ly support the reciprocal roll holding tuTies 69 and 70. The inner ends or a suitable portion of these tubes 69 and 70 are indented or punched in as at 71 at spaced intervals circumferentially around the tubes to cooperate with the.

spirals 72 and 73 of the driver passing. t rou h these tubes. These spirals are unite at one end by the handle 74 and at their opposite ends are provided with the stops .75 as before described. The blade .holding tube 76 is constructed as hereinbefore described, being slotted to permit the blade 77 to project and is formed with a spiral portion 78 passing through a slot 79 in the basket 80. The outer end of the s iral is journaled as at 81 to the casing. I de- I of the rollers to prevent their premature movement on reversal of the spiral driver. These washers or shims ut a'drag on the rolls. The operation of t is modification is similar to the construction set forth in Fig.

1, exce t that the indented ortions 71 ree balls and slot drive of the former.

' reciprocating wholly within said casing, a

stropping roll mounted on said tube, a blade holder mounted in said casing, a spiral driver reciprocable through said tube, and

' means operable by the reciprocation of said spiral driver for rotating and reciprocat ing the rolls and positioning said blade holder. i

2. In a device of the class described, a casing, slotted sleeves journaled therein, a

s iral driver reciprocable through said s eeves, a basket shiftable endwise alon said sleeves, roll carrying sleeves carrie within saidbasket and shiftable along said sleeves, rolls mounted on said roll carrying sleeves, means carried by said roll carrying sleeves and projecting through the slots in said tubes mto contact with said spiral driver, a blade holder carried by said casing and-operably connected with said basket to a position said blade holder in timed relation to the rotation of said rolls by said driver.

3. A device of the class described comprising a casing, inwardly projectin sleeves carried by said casing, tubes carried by said sleeves for rotation and reciprocation entirely within said casing, a spiraldriver reciprocable through said sleeves and tubes, stropping rolls rigidly carried by said tubes, :1 blade holder carried by said casin and means operable on reciprocation 0 said driver for positioning said blade and rotating said lOllS.

4. A device of the class described comprising a casing, stropping rolls and a blade shifting member mounted therein, means for positioning said blade shifting member and rotating said rolls, a blade holder non-detachably connected to said member and slid able into and out of said casing to blade sharpening position between the rolls or to blade removing position outside of said casing, said blade holder having means for positioning the blade thereon including under cut faces adapted to overhan opposite ends of the blade to prevent its inadvertent removal from the blade holder, beveled endfaces adapted to prevent the inadvertent dislodgment of the blade.

5. A device of the class described comrising a' casing, stropping means and a lade shifting member mounted therein, means for positioning said blade shifting member and rotating said rolls, a blade holder cooperating with said member and slidable relatively thereto into and out of said casing, said blade holder having means for positioning a blade thereon including a blade seat formedwith a restricted mouth whereby when said blade is deformedmr bowed, it can pass onto said seat and will then resume its natural flat form and will be locked thereon against inadvertent removal.

6. A device ofgthe classdescribed comprising a casing, a basket reciprocally mounted therein, stropping means journaled for rotation in said basket, a spiral driver reciprocable into and out of said casing, a blade holder having its opposite ends journaled in said casing and shiftable by the reciprocation of said basket, and means operable on the reci rocation of said driver I for shifting said bas et to position the blade holder, said means being adapted to thereafter rotate said stropping means.

7. A device of the class described comprising a casing, inwardly projecting sleeves carried by said casing, tubes mounted within said sleeves for rotation and reciprocation entirely within said casing, a spiral driver reciprocable through said sleeves and tubes, stropping rolls rigidly carried by said tubes, a blade holder carried by said casing, and means operable on reciprocation of said driver for positioning said blade and rotating said rolls.

8. A device of the class described comprising a casing, a basket reciprocably mounted therein, stropping rolls journaled for rotation in said basket, a spiral driver reciprocable into and out of said casing, a blade shifting member having a slotted tubular portion journaled for rotation in one end of said casing and having a spiral portion journaled for rotation in the opposite end of said casing, and passing through a slot in said basket, and means operated by said spiral driver for retaining the rolls and reciprocating the basket for positioning the blade shifting member.

9. A device of the class described comprising a casing, a pair of tubes joui'naled therein and reciprocating wholly Within said casing, stropping rolls mounted on said tubes, a blade holder mounted in said casing, a spiral driver reciprocable through each tube, and means operable by the reciprocation of said spiral driver for rotating and recim'ocatins the rolls and wisitioning the blade holder.

In testimony whereof, I afl'ix my signature.

GEORGE D. GALLAGHER. 

